MESON Chess Problem Database

Problem Display
PID: 240575 (8/8/B7/3r4/1pPrp3/1R2Np1N/3PkB2/3R3K w - - 0 1)

Cristoffanini, Guido

Shakhmaty i Shashki, 1930

8/8/B7/3r4/1pPrp3/1R2Np1N/3PkB2/3R3K

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Re1#
  • Tries
    • 1.Bh4?
      • threat
        • 2.Sg1#
        • 2.Sf4#
      • 1...Rf5
        • 2.Sg1#
      • 1...Rg5
        • 2.Sf4#
      • 1...f2!
    • 1.cxd5+?
      • 1...Rc4
        • 2.Bxc4#
      • 1...Rd3!
  • Keys
    • 1.Rb2!
      • threat
        • 2.d3#
      • 1...Kd3
        • 2.Sf4#
      • 1...Rxd2
        • 2.cxd5#
      • 1...Rxc4
        • 2.d4#
      • 1...Rd3
        • 2.Re1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XP(C)::R1(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);::S(G)
      • Refutation
        • P(b);
    • Try
      • P(H);CHECK,XR(f)
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::B(I),XR(d)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • R(E);
    • Threat
      • R(E)+P(C)
    • Vars
      • K(a);S_FLIGHT::S(G)
      • R(d);N_GUARD,P_SPINR(d),XP(C)::B(I)+P(H),XR(f)
      • R(d);OGATE,P_SPINR(d),XP(H)::R(E)+P(C)
      • R(d);SBLOCK::R1(A)
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